whipple



UNTTED sTATEs PATENT oEEroE.

M. D. WHIPPLE AND L. W. WHIPPLE, OF SOMERVILLE, `MASSAGHUSETTS,ASSIGNORS TO LYMAN` W; WI-IIPPLE AND ROBT. 'B. FITTS.

`PROCESS OF ENGRAVING `0R PRINTING UPON GLASS.

Speccaton of Letters Patent No. 11,189, dated June 27,- 1854.

To all whom t may concern.'

Be it known that we, MILTON D. WHIPPLE and LYMAN- W. WHIPPLE, both ofSomerville, in the county of Middlesex and State of Massachusetts, haveinvented a new and useful process of engraving and printing upon glassand `of iguring and ornamenting the same, and also a new machine for thepurpose of performing the same, the whole being fully and clearlydescribed in the following specification, reference` being hadl to theannexeddrawings, in which- Figure l is a perspective `view of ourmachine; Fig. 2, a plan; Fig. 3, a view of the` same from beneath; Fig.4, an, end view with a portion ofthe framing` removed to show the partsbeneath and Fig. 5 a deftached view of the feeding apparatus.

The first` part .of our invention consists in causingga metalliccylinder having the desired figures or letters engraved thereon to rollin contact with the surface of glass to be engraved, emery, either dryormixed with water, being kept constantly at the point of Contact betweenthe two.

To enable `others skilled in the art to which this most nearly pertainsto make use of our invention we-will proceed to de-` scribe the mannerin which we have carried it out. A is the bed or table upon which theoperative parts of the machine are placed. B is the driving shaftthrough which the other moving parts of the machine are actuated, bypower communicated to the pulleys C, C. The shaft B carries a chuck D,upon which the `article to` be engraved is centered. In Figs. l and 2the wineglass E is forced upon the chuck, with which it is caused torevolve, by the center F, which is tightened by the screw a. i G is acog-wheel upon the shaft B, whic engages with thegear H upon the shaftI. The number of the teeth should be the same upon these two cog wheelsor they should tact with the article to be engraved ina manner whichwill be' hereafter explained.

The cylinder shaft I rests upon and is supported by two uprights M, N,which rise from the bed of the machine. Upon the top of the upright N isa curved guide against which the end o of the shaft I is made to pressby the spring O, the strength of which is adjusted by the screw P. Thecenter of the curved guide piece b is about in the point of contact ofthe engraving cylinder L and the article to be engraved. The end d ofthe shaft I is allowed a slight longitudinal motion in its bearing for apurpose which will be explained hereafter. Q is a lever beneath the bedof the machine, which is pivoted at f, immediately beneath the point ofcontact between the Vengraving cylinder and the article to be engraved.

R, S, and T are mortisesthrough the bed of the machine, up through whichproject the standards g, It, and z' which rise from the lever beneaththe` table. It `is evident that as this lever is vibrated upon itsCenter the standards g, 7a., and z', and the parts con-` nectedtherewith will vibrate around a common center. `7c is a fork attached tothe rod m which passes through the standard g. This forku grasps theshaft I `upon each side of the engraving cylinder and forces the latter,by means of its spring V, against the article to be engraved. As thelever Q is caused t0 vibrate upon its center a rocking motion iscommunicated to the cylinder L, by which means every portion of thecylinderis successively brought in contact with the article to beengraved. The lever Q with its standards g, `z/and z', is thus made toguide and control all the motions of the engraving cylinder, the shaft Ibeing kept pressed up against the standard z' by the spring O, one endof which is attached to the standard L.

Thelever Q is slowly revolved upon its center for the purpose of givingthe re quired rocking motion to the engraving cyln inder in thefollowing manner :IV is a screw which runs transversely beneath the bedof the machine and ca-rries the nut X, which is connected with the1lever Q by the link Y. Z is ahub upon the shaft B, which carries one ormore studs l, which strike against the lever A and depress it as theshaft B revolves. This lever is pivoted at p,

and is connected by the link g, to the pawl lever B, which is pivoted atr, and carries a hook pawl t. This pawl is made to engagel with theteeth Of a ratchet wheel 'u upon the shaft of the screw W, by means Oftothe commencement of t-he Operation.

i does to that of the wheel G.

Operation: The parts b-eing adjusted in the positions seen in Figs. 1and 2 and the article to be engraved being secured upon the chuck On theend of the shaft B as before explained, the machine is set in motion andemery and water are caused to drop upon the point of contact between theengraved cylinder and the glass. Those portions Of the cylinder whichare engraved or countersunk below the surface produce no elfectbut thatportion of the cylinder which is unengraved presses or grinds the emeryupon the glass, by which the latter is cut or ground, the surface thusproduced being more or less rough according to the ineness of the emeryor other cutting material employed. It is evident that if the ligure besunk beneath the surface Of the engraving cylinder it will appear uponthe glass uncut while the ground will be roughened, but if the figure beraised above the surface of the engraving cylinder then it will be cutbelow the surface of the glass and the ground will be left plain. Theengraving cylinder is caused to rock in cont-act with 'the article to becut that every portion of the ligure may be brought in contact with thecorresponding portion Of the glass article to be engrave the shaft Isliding longitudinally in its bearings d' to accommodate it to thismotion. b

It is evident that the diameter of the engraving cylinder should bearabout the sa-me relation tO the diameter Of the article to be engravedthat the diameter of the gear H It is by no means necessary however thatthis correspondence should be exact, for although any variationtherefrom Will produce a drag between the surfaces of the engravingcylinder and the glass, yet this drag being equally distributed over thewhole surface of the latter is very slight at any one point and canproduce no other effect than tO vwiden or narrow the lines of thefigures which'is caused to vibrate back and forthl in Contact with theglass as the latter rotates, the surface mot-ion of the two being equal.methods of carrying out O-ur invention, which consists in transferringthe figure from a surface of metal to one of glass in the manner setforth.

What we claim as our invention, and desire to secure by Letters Patentisl. The within described method of engraving or lettering upon glass,an engraved metallic surface being caused to revolve or These howeverare but equivalent -K j vibrate in contact with the surface O-f theglass, emery or other suitable cutting material beinginterposed betweenthe bearing surfaces of the two.

2. We claim the method substantially as herein described of causing theengraving Vr cylinder to rO-ll in contact with the surface of thearticle to be engraved, the parts which carry and give motion to t-hecylinder being connected with the vibrating lever Q Operating in themanner substantially as setI forth.

MILTON D. VHIPPLE. LYMAN WV. WHIPPLE.

Witnesses: v

SAM COOPER, JOHN S. GLOW,

